This example displays a yellow, cartoon-style face built with SVG shapes, including two eyes, rectangular eyebrows, and a smiling mouth. The eyebrows continuously move upward and downward through a two-stage chained animation cycle. The face is constructed in D3 v5 using `d3.select` and `d3.arc`, with shape attributes set directly. A React starter is available, but the primary implementation uses plain D3 with SVG transitions to animate the eyebrow group’s translate transform.